Answer:
2. 18, 20, 24, 30, 38, 48
3. 55, 54, 51, 46, 39, 30, 19
4. 3, 9, 27, 81, 263
5. 82, 81, 78, 73, 66, 57
6. 105, 100, 90, 75, 55
7. 10, 15, 21, 28, 36
8. 3, 7, 19, 55, 163, 487
9. 4, 6, 10, 18, 34, 66
10. 7, 17, 27, 37, 47, 57